uniqid insert mysql

[eluser]WanWizard[/eluser]
What's wrong with

Code:

function insert($data){    

$array = array('id' => md5(uniqid()), 'nome'=> $data['nome'], 'login' => $data['login'], 'senha' => $data['senha'], 'date' => date('Y-m-d'), 'session_date' => date('Y-m-d h:m:s'));
$this->db->set($array);
$this->db->insert('users');

}